in
in fall in the fall区别？
fall in the fall区别？
in fall ，在秋季，表示泛指。
例句
The study also found that those born in fall less probably had a mood of depression which may easily drive them to cry, while those in winter were not easier to be angry.
这项研究还发现，出生在秋季的人不大可能出现容易让他们哭泣的抑郁情绪，而冬天出生的人则没那么容易生气。
in the fall 在秋天在秋季坠落走马灯表示具体的某一个秋天。
例句，
He has designed to go to Australia for a trip in the fall.
他已经打算秋天去澳大利亚旅行。
fall down不足造句简单？
During autumn, the leaves change color and fall down from the trees.
在秋天，树叶变了颜色，从树上掉下来。
He would have liked to fall down and worship him, if it were in the dark.
如果是在黑暗中，他真想跪下来膜拜他。
They will fall down as rain.
它们会像雨一样降落。
What will fall down from the sky
什么会从天而降
The price of sugar will fall down.
糖的价格将会下降。
Who will pick me up when l fall down
我掉落时谁会将我救出呢？
What if you fall down
你摔倒了怎么办？
Leaves fall down from trees in autumn.
在秋天，很多叶子都从树上飘落。
Why did it fall down
它为什么会掉下来？
We all fall down.
我们都倒下了。
You might fall down there and break your leg.
你可能会摔下去把腿摔断的。
Dont hang off the rope, or you will fall down.
不要放开绳子，否则你会摔下去。
Grandfather has told me not to let you fall down the rocks, so we cant go!
大叔告诉我不要让你从岩石上掉下去，所以我们不能去！